Could I Be Pregnant? Risks After Unprotected Sex - Obstetrics and Gynecology

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Will this lead to pregnancy?


My menstrual cycle is about 28 to 33 days long, with an average of 31 days last year.
This month, it has been 38 days, and my period still hasn't arrived, so I'm a bit worried.
The last time my boyfriend and I had intercourse was on days 6 to 8 of my menstrual cycle, which should have been after my period ended.
Since it was my first time trying to have intercourse right after my period, it was quite painful, so the duration of intercourse was short.
Additionally, he used a condom the entire time and did not ejaculate.
Is there a chance I could be pregnant?

Xiao Ting, 20~29 year old female. Ask Date: 2006/05/07

Dr. Li Guanghan reply Obstetrics and Gynecology


Hello: Welcome to the clinic.
We will perform a urine test and an ultrasound for you.
Thank you.
Hsinchu Hospital, Department of Obstetrics and Gynecology.

Reply Date: 2006/05/07

More Info


When it comes to the possibility of pregnancy, understanding the circumstances surrounding sexual activity is crucial. Based on your description, there are several factors to consider regarding your risk of becoming pregnant.

Firstly, you mentioned that your menstrual cycle typically lasts between 28 to 33 days, and you are currently 38 days into your cycle without menstruation. This delay can indeed be a sign of pregnancy, especially if your cycles are usually regular. However, there are other factors that can contribute to a missed period, including stress, hormonal imbalances, or changes in lifestyle.

You also indicated that the last sexual encounter occurred during the 6th to 8th day after your period, which is generally considered a low-fertility window. However, it is important to note that sperm can survive in the female reproductive tract for up to five days. If you had ovulated earlier than expected, there could be a risk of pregnancy, even if you had intercourse shortly after your period ended.

The fact that your boyfriend used a condom throughout the encounter and did not ejaculate inside you significantly reduces the risk of pregnancy. Condoms are highly effective at preventing pregnancy when used correctly, with a failure rate of about 2% with perfect use and around 15% with typical use. Since you mentioned that he did not ejaculate, this further decreases the likelihood of pregnancy.

However, it is essential to consider the possibility of pre-ejaculate fluid (pre-cum), which can contain sperm. While the chances are lower, it is still a factor to keep in mind. If there was any chance of pre-ejaculate coming into contact with the vaginal area, there could be a minimal risk of pregnancy.

Regarding your concerns about the pain during intercourse, it is not uncommon for individuals to experience discomfort, especially during their first sexual experiences or shortly after menstruation. This discomfort could be due to various reasons, including lack of lubrication, anxiety, or tension. If this pain persists or worsens, it may be worth consulting a healthcare provider.

Given that your period is late, the best course of action would be to take a home pregnancy test. These tests are most accurate when taken after a missed period, as they measure the hormone hCG (human chorionic gonadotropin), which is produced during pregnancy. If the test is positive, it is advisable to schedule an appointment with a healthcare provider for further evaluation and confirmation.

In summary, while the risk of pregnancy seems low based on your description—due to the use of condoms and the timing of your menstrual cycle—it is still important to monitor your body and take a pregnancy test if your period does not arrive soon. If you have further concerns or experience any unusual symptoms, do not hesitate to reach out to a healthcare professional for personalized advice and support.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, if you have taken contraceptive measures, you should not be pregnant. If you are still concerned, you may consider taking emergency contraception. Wishing you good health.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy are low, but it is still recommended to use condoms for safety. Wishing you good health.

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Dr. Lü Lizheng reply Obstetrics and Gynecology
If there is sexual intercourse without contraception, there is a possibility of pregnancy. If your next menstrual period does not arrive, please take a pregnancy test to confirm whether you are pregnant. Sincerely, Dr. Lu Li-Cheng, Taoyuan Hospital.

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On October 27, I had unprotected sexual intercourse for the first time without ejaculation. I couldn't find the vaginal opening and did not fully penetrate. After 24 hours, I took emergency contraception (Ella) and experienced dizziness as a side effect. Am I at risk of preg...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, sometimes dizziness can be a side effect after taking medication. The chances of pregnancy are low, but it is best to take preventive measures beforehand. If your period is more than a week late, it is advisable to consult a gynecologist. Wishing you good health.

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